I agree. I am an adjunct and (in my opinion, and understandably) dedicate more time to my teaching than full-time professors that also have research requirements. You could argue the opposite point-- that Universities that make use of qualified adjuncts should be rewarded due to inexpensively and efficiently providing quality education. The biggest point should be that adjuncts need to fight for better pay.

I'm actually quite shocked that article was written by an adjunct. Seems like it'd make more sense if it was written by someone with a vested interest on the opposing side.